Go to 33's?

[ghetdjc320]

18 hours ago, boxyjeep said:

 

Currently running WJ full outers/hubs/brakes in the front (so no adapters).  Running adapters in the rear until I have a chance to get some 5x5" axle shafts and do a disc brake conversion.  I hate running adapters, but it's not the end of the world.

Don’t mean to hijack this thread but this is an interesting tidbit of tech here. So you are running a Dana 30 but with WJ knuckles and WJ unit bearings?

[boxyjeep]

7 hours ago, ghetdjc320 said:

Don’t mean to hijack this thread but this is an interesting tidbit of tech here. So you are running a Dana 30 but with WJ knuckles and WJ unit bearings?

Yes, I’m running full WJ knuckles, brakes, unit bearings, etc. with original XJ D30 shafts.  I’m using the spacer kit that is necessary to re-align the knuckle to the center axis of the u-joint.  I’m also running a WJ master/booster and Wilwood manual proportioning valve for the rear (fully removed load sensing valve).

 

[75sv1]

On 3/28/2025 at 6:04 PM, boxyjeep said:

 

Currently running WJ full outers/hubs/brakes in the front (so no adapters).  Running adapters in the rear until I have a chance to get some 5x5" axle shafts and do a disc brake conversion.  I hate running adapters, but it's not the end of the world.

Yeah, I'm running the same. Been probably 5-8 years. I have a Ford 8.8 in the rear. I did do the Yukon upgrade shafts on an XJ. So, no spacers. The Yukon comes with 5on4.5 and 5on5.5. I plan to redrill to 5 on 5 on another XJ. Then adapt WJ rear brakes. Also looking to go to 13 inch rotors at some point. 

[llhat]

On 3/27/2025 at 8:05 PM, llhat said:

thanks for this,  soon to replace tires on stock height 1989,

when i obtained it @ 72k, it had 235 BFG all terrian C loads on an aftermarket 'centerline' looking wheel,  @ 140k replaced with take-offs

30 x9.5 GSA goodyears with a 'accessory'  jeep wheel polished,  but seemed to have deeper backspacing than those others

on the back i would hear a 'click click' st times from a rub on emergency brake cable, and on front lower control arms at times.

originally had steel wheels.

Now debating on dropping back to LT235  or staying around the 30 x 9.5  (my 'tire guy' has some mud terrrains

he took off of his scout...  will decide next week.)

 

it now wants to drop out of OD 'quickly' at speed (3.54 gears)... but pre 2000 when driving it a LOT it would get up to 23mpg.

 

made the decision..  a LOT of factors involved...   my use and the mud terrains just did not seem like the best fit...

was offered a couple of off-brands in 30/ 950  and 235 and if there weren't some issues with the retaining screw

on the hub cover, may have gone on with this off-brand,  don't even remember name..

option given for the next day... and made decision..

 

Falken Rubitrek  235's   Looks good,  rides good,  noise lowered...   and no bumping, etc in steering...

 

those 30 x950 goodyear gsa times had given up the ghost..  cupping, dry rot,  and my records showed they were installed in 2003,

and seems tire dated 2003 also...  and <25k miles...

 

it was time.

[Pete M]

that's an oooooooold tire.  

[ghetdjc320]

On 3/29/2025 at 6:55 PM, boxyjeep said:

Yes, I’m running full WJ knuckles, brakes, unit bearings, etc. with original XJ D30 shafts.  I’m using the spacer kit that is necessary to re-align the knuckle to the center axis of the u-joint.  I’m also running a WJ master/booster and Wilwood manual proportioning valve for the rear (fully removed load sensing valve).

 

Thanks for the info! I think the long standing unanswered question has been whether or not we can just use WJ unit bearings on a D30 without using the WJ knuckles or spacers. Opens up wheel availability for 5x5 patterns without adding to the track width

[boxyjeep]

31 minutes ago, ghetdjc320 said:

Thanks for the info! I think the long standing unanswered question has been whether or not we can just use WJ unit bearings on a D30 without using the WJ knuckles or spacers. Opens up wheel availability for 5x5 patterns without adding to the track width

Not sure on this.  I think you can, but you’d have to verify that the XJ rotors would fit over the WJ unit bearings after being re-drilled.

 

Also, the WJ knuckle swap doesn’t change the track width at all (unless you’re running adapters for some reason).

[ghetdjc320]

3 minutes ago, boxyjeep said:

Not sure on this.  I think you can, but you’d have to verify that the XJ rotors would fit over the WJ unit bearings after being re-drilled.

 

Also, the WJ knuckle swap doesn’t change the track width at all (unless you’re running adapters for some reason).

With a pre 90 knuckle, I'm thinking you could swap over the WJ rotors or run the WK rotors. The calipers I'm running are WK2 calipers and thy bolt on to the knuckles once the holes have been enlarged slightly.

[boxyjeep]

10 minutes ago, ghetdjc320 said:

With a pre 90 knuckle, I'm thinking you could swap over the WJ rotors or run the WK rotors. The calipers I'm running are WK2 calipers and thy bolt on to the knuckles once the holes have been enlarged slightly.

not a bad idea!

[Eagle_SX4]

33's here we come!!! Got some 17's that will go on once I get tires (285/70R17) and trim the fenders. The tires will not clear at the current ride height and I don't want to go much higher. I will probably end up going with the bushwacker pocket flares. The wheels are Mammoth Boulder's 17x9 5x4.5 4.5 backspacing.

[ghetdjc320]

9 hours ago, Eagle_SX4 said:

33's here we come!!! Got some 17's that will go on once I get tires (285/70R17) and trim the fenders. The tires will not clear at the current ride height and I don't want to go much higher. I will probably end up going with the bushwacker pocket flares. The wheels are Mammoth Boulder's 17x9 5x4.5 4.5 backspacing.

That’s a very wide wheel for the tire width. Looks nice though

[Eagle_SX4]

58 minutes ago, ghetdjc320 said:

That’s a very wide wheel for the tire width. Looks nice though

I tried to find an 8 inch wide wheel but couldn't find one that I liked with enough backspacing. Most of the 8 inch wide wheels I found only had 3.5 - 3.75 inch backspacing. I am not worried about it. The new tires will have the same sidewall to rim clearance my 31x10.5's have on my 8 inch wheels.

[ghetdjc320]

36 minutes ago, Eagle_SX4 said:

I tried to find an 8 inch wide wheel but couldn't find one that I liked with enough backspacing. Most of the 8 inch wide wheels I found only had 3.5 - 3.75 inch backspacing. I am not worried about it. The new tires will have the same sidewall to rim clearance my 31x10.5's have on my 8 inch wheels.

It’s the bead that can present a problem. But it should be fine so long as you don’t air down much when off-road

[Eagle_SX4]

1 minute ago, ghetdjc320 said:

It’s the bead that can present a problem. But it should be fine so long as you don’t air down off-road. 

I will keep that in mind.

[Flexj]

Doesnt seem like anyone has mentioned it yet, but you can run WJ lower arms. They have a nice bend in them that reduce tire rub on the LCA significantly... Beyond that I have nothing to add to this conversation then to agree with previous posts on perfecting your offset. I am running 37s with Core4x4 Long arms and I have zero rubbing lock to lock AT RIDE HEIGHT. I have yet to see how bad itll rub when I start taking it off the beaten path.. 

[Eagle_SX4]

I am impatient and couldn't wait, so I got some new 33's (285/70r17 on 17x9 wheels with -6mm offset about 4.75" backspacing) fitted with some bushwacker pocket flares everything seems to fit nice. I have 1.5 inch of lift in the front and no lift in the back. The tires would not have cleared the front without these flares. I think the rear may have been fine with the factory flares but I put the bushwacker flares on the back as well.